EP 2774781 A1 20140910 - HEAVY DUTY TIRE
Title (en)
HEAVY DUTY TIRE
Title (de)
SCHWERLASTREIFEN
Title (fr)
PNEUMATIQUE POUR CHARGEMENT LOURD
Publication
Application
Priority
- JP 2011260915 A 20111129
- JP 2012080553 W 20121127
Abstract (en)
shoulder drop wear and triangular wear are prevented. A heavy duty tire which comprises a shoulder block comprises a first arc portion having a radius of curvature (R1), in which a tread contour comprises an arc center at a ti re equatorial surface at a 5% internal pressure state; and a second arc portion having a radius of curvature of (R2) whi ch intersects wi th the fi rst arc porti on at an i ntersecti on (Q) . An arc center of the second arc portion is located on a radial line passing through the intersection (Q). A ratio of the radii of curvature (R2/R1) is between 0.2 and 0.5. A ratio (He/H) between a tire radial direction distance (He) from an equatorial point to a tread edge and a radial direction distance (H) from the equatorial poi nt to a vi rtual tread edge on a line extendi ng from the fi rst arc portion is equal to or higher than 0.5 or lower than 1.0.
IPC 8 full level
B60C 11/01 (2006.01); B60C 11/00 (2006.01)
CPC (source: EP US)
B60C 11/0083 (2013.01 - EP US); B60C 11/01 (2013.01 - EP US); B60C 11/0306 (2013.01 - EP US); B60C 11/0332 (2013.01 - EP US); B60C 2011/013 (2013.01 - EP US); B60C 2200/06 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2774781 A1 20140910; EP 2774781 A4 20150729; EP 2774781 B1 20180307; CN 103974837 A 20140806; CN 103974837 B 20170329; JP 2013112218 A 20130610; JP 5559763 B2 20140723; KR 101923761 B1 20181129; KR 20140103988 A 20140827; US 2014332133 A1 20141113; US 9770950 B2 20170926; WO 2013080944 A1 20130606
DOCDB simple family (application)
EP 12852480 A 20121127; CN 201280058915 A 20121127; JP 2011260915 A 20111129; JP 2012080553 W 20121127; KR 20147017345 A 20121127; US 201214361225 A 20121127